Drag-saw.



. No. 659,376. Patented Oct 9, I900.

B. F. NEDBOW.

DRAG SAW.

Application filed mi; 12, 1900.)

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WHNESSES I INVENTOR I BY fleiykmani/l dram e I as d ATTORNEY.

UNITED STATES PATENT OFFICE.

BENJAMAN F. NEDROW, OF ANAOORTES, WASHINGTON.

DRAG-SAW.

SPECIFICATION forming part of Letters Patent No. 659,376, dated October9, 1900.

Application filed March 12, 1900. Serial No. 8,348. (No model.)

To all whom it may concern:

Be it known that I, BENJAMAN F. NEDRow, a citizen of the United Statesof America, and

a resident of Auacortes, county of Skagit,

and State of Washington, have invented certain new and usefulImprovements in Drag- Saws, of which the following is a specification.

My invention relates to improvements in machines known as drag-saws; andI have for the object thereof to provide a device of this class whichshall embodyessential featu res of simplicity, durability, and generalefficiency and be readily adjustable.

as illustrated on the accompanying drawings and set forth in thefollowing specification. With reference to the drawings forming a partof this specification, Figure 1 is a side elevation of myimproveddrag-saw, indicated I ed to support the several parts of my device, iand which comprises oppositeside members B, each being composed of legsa and a, which converge upwardly and are engaged at their upper endswith a suitable pivot 5, and a suitable tie b is introduced and isattached to the leg at by a bolt, as 6, and to leg (1 by a similar bolt7, which is adapted to engage with the tie bin any one of a plurality ofapertures 8, provided therein, and thereby determines the separation ofthe lower ends of the legs a and a, and to provide for a greater degreeof adjustment of the legs a plurality of like apertures 9 may beprovided in the leg at. Thus side members are provided which aresubstantially of A shape and are readily adjustable to vary the heightthereof and are adapted to be locked in adjusted positions.

To distance the opposite side members B, suitable struts, as C, O, and Care positioned therebetween and the ends thereof are reduced in diameterto engage suitable aper- I at tain this object by the construction,combinations, and arrangement of the several parts,

tures in the legs a and (1, adjacent the ends thereof and to havesuitable threaded connection therewith or with nuts, as 10, whichare'adapted to clampsaid side members to the shoulders formed by thereduction of said ends, or the struts and side members may be each atransverse socket 12, adapted to receive the shank S of a suitablecrank, as d or d and suitable means, as a set-screw 13, is introduced tosecure the crank at the required radius. Upon the shaft D is alsoprovided a fly-Wheel E and a pulley, as F, which may be employed toreceive power from a belt driven by an engine or otherlike means.

A'lever, as P, may also be employed to operate the shaft D and isengaged with a suitable fulcrum 20, provided at the outer extremity ofabracket,as 21,positioned upon one "of the legs a, and a nut, as 22, isengaged with said fu'lcrum to retain the lever. A

suitable con necting-rod f is engaged with one end of thelever P bymeans ofa bolt, as 23,

and is suitably formed at the opposite end to couple with the crank-pinof thecrank d in any well-known manner, and the free end of the lever issuitably formed to provide a handle.

To provide for a reciprocati ve movement of the saw K, as determined bythe revolution of. the crank (1 a lever, as H, is suitably engaged witha fulcrum 16 att-he opposite side of the main frame from the lever P andin a manner similar thereto and is coupled to the crank-pin of the crankd by a connecting-rod e, which has adjustable connection with said leverby means of a removable bolt 24 and a plurality of apertures 26,provided in said lever, and is suitably formed to receive the crank-pinof the crank d in any well-known manner, while a rod, as 70, is engagedwith the opposite end of said lever by suitable means, as a bolt 17, andwith the saw by a similar bolt 19. The lever I-I may be provided with aplurality of apertures 18, whereby it may be adjusted on the fulcrum 16to regulate the travel of the saw K.

A suitable guide, as g, is positioned on one of the legs a to engage thesaw when entering the cut and preferably comprises a rod bent at rightangles and positioned with one end abutting said leg, while in theopposite end is provided a slot, as 27, to receive the saw.

A suitable holdfast is provided at the lower extremity of the legs a,whereby the main frame A may be attached to a log or other convenientanchor. Thisholdfast preferably comprises span-dogs, as v, pivotallyengaged with the outer extremities of the strut O and retained bysuitable nuts 29, and at the lower extremities of the legs to blocks, ast, are engaged therewith by suitable bolts 30 and are adapted to providesuitable feet for the legs.

To raise the saw K from the out, a line, as h, is engaged with the rodby means of a suitable connection, as a link i, and extends upwardlyover an idler n, which is suitably journaled upon an extended end of thestrut C and retained between a nut 31 and collar 32, and it is obviousthat the outer end of said line may be secured to hold the saw in araised position while shifting the main frame or the saw-log for a newout.

It will be clearly understood that the main frame A is renderedadjustable by removing the bolts 7 to release the ties b, when the legsa and a may be closed or opened on the pivots 5 to change the pitchthereof, as desired, and thereby adjust the fulcra 16 and 20 and shaft Das to elevation, whereby the saw is made to reciprocate in a plane moreor less horizontal, as may be desired. Furthermore, the travel of thesaw may be regulated by adjusting the lever H, connecting-rod e, or theradius of the crank-pin of the crank (Z and the speed thereof may beregulated by adjusting the throw of the crank d.

Obviously the main frame 'A' may be attached to the log upon which itmay be desired to operate by setting the span-dogs v to engagetherewith, as disclosed in Fig. 1, and the side members B may be soadjusted that the saw is made to enter the cut with its cutting edgemore or less horizontal, and during operations upon logs of extremediameter the frame may be so adjusted during each cut, and therebyinsure a more perfect operation of the saw; also, the machine thusprovided is manifestly adapted to operate upon other logs than the oneto which it may be anchored,in a manner clearly indicated in Fig. 2.

When desirable to adjust the cranks (Z or d to vary the throw thereof,the set-screws 13 are turned to release same, and the shanks S of thecranks are free forlongitudinal movement in the sockets 12.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. In a device of the class described; a main frame comprising oppositeside mombers, each providing a pair'of legs converging upwardly, meansto pivotally connect said legs at their upper ends, a tie, means to locksaid tie to the legs, a holdfast engaged with the lower extremity of oneleg, and means to distance the side members; substantially as shown anddescribed.

2. In a device of the class described; a main frame comprising oppositeside members, each providing a pair of legs converging upwardly, meansto pivotally connect the legs at their upper ends, a tie, means to locksaid tie to the legs, a holdfa-st engaged with the lower extremity ofone leg and a foot pivotally engaged with the lower extremity of theother leg, and suitable means to distance the side members;substantially as shown and described.

3. In a machine of the nature indicated, a frame comprising oppositeside members each composed of a pair of legs pivoted together at theirupper ends, a tie between the two legs of each pair, a rotatable shaftextending transversely between corresponding legs of the side membersand journaled upon said legs, a lever fulcrumed upon one side of theframe, operative connections at the same side of the frame between saidlever and the shaft and said lever and a saw, an operating-leverfulcrumed upon the opposite side of the frame, and operative connectionsat the same side of the frame between said operating-lever and the saidshaft, the said levers being fulcrumed upon the legs not carrying thesaid shaft; substantially as described.

4. In a machine of the nature indicated, a main frame comprising sidemembers each composed of a pair of legs pivoted together at their upperends, means for spacing said side members from each other, a tie pivotedupon one leg of each side member and having means for adjustablyengaging the opposite leg of its side member, a rotatable shaftextending between-correspondinglegs of the opposite side members andjournaled thereon, a fiy-wheel upon said shaft between said legs, cranksat the opposite ends of said shaft, an operating-lever journaled to aleg not carryingsaid shaft, a link connecting said lever to theshaft-crank on the same side of the frame as is said lever, a secondlever fulcrumed to a leg not carrying said shaft and upon the side ofthe frame opposite said operating-lever, means for adjusting the fulcrumof said second lever, a link connecting one end of said second lever tothe shaftcrank at that side of the frame, said link having adjustableconnection with said lever, and a link connecting the opposite end ofsaid lever with a saw; substantially as described.

Signed by me at Anacortes, State of Washington, this 27th day ofFebruary, 1900.

BENJAMAN F. NEDROW.

Witnesses:

H. D. ALLISON, V. J. KNAPP.

